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OpenNI Cookbook

You're reading from   OpenNI Cookbook Learn how to write NIUI-based applications and motion-controlled games

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Product type Paperback
Published in Jul 2013
Publisher Packt
ISBN-13 9781849518468
Length 324 pages
Edition 1st Edition
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Author (1):
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Soroush Falahati Soroush Falahati
Author Profile Icon Soroush Falahati
Soroush Falahati
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Table of Contents (14) Chapters Close

OpenNI Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started FREE CHAPTER 2. OpenNI and C++ 3. Using Low-level Data 4. More about Low-level Outputs 5. NiTE and User Tracking 6. NiTE and Hand Tracking 7. NiTE and Skeleton Tracking Index

Event-based reading of hands' data


In the preceding recipes, we use a while loop to read frames of data from nite::HandTracker. This is not a good idea since this will block our application and even the while loop itself until new data becomes available. Fortunately, NiTE has given us this ability to introduce a class/struct with a method in it to be called when a new frame of data becomes available. So our application can do what we want it to do and, when new data becomes available, we can read it without busying our main application thread. In this recipe, we will show you how to use this feature.

Getting ready

Create a project in Visual Studio and prepare it for working with OpenNI and NiTE using the Create a project in Visual Studio 2010 recipe in Chapter 2, OpenNI and C++.

How to do it...

  1. Copy ReadLastCharOfLine() and HandleStatus()from the first recipe of this chapter to the top of your source code (just below the #include lines).

  2. Define the hTrackerNewFrameListener structure (or class...

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